A construction project is broken down into the following activities: Immediate Predecessor Activity A Time (weeks) 4 7 6 2 B D E F G A A B,D D E,F 4 1 4 a. Draw the network diagram. (4 points) b. Find the critical path using the two-pass method. (4 points) c. What is the project duration? (2 points) d. How much slack does activity F have? (2 points) e. Suppose that the goal is to reduce the project duration to 16 days. Explain, step by step, which tasks to crash, and compute the resulting total cost of reducing the project duration to 16 days. (8 points) Normal Activit y Normal Time (days) Crash Time (days) Crash Cost ($) Cost ($) Daily Crash Cost 4 1 100 1000 A 7 5 200 400 B 3 6 150 390 D 2. 1 100 150 E 4 N 500 900 Project Duration Critical Paths Best Option [days to crash] (days)